Valve.



H. LENTI.

VALVE.

APFLICATlON FILED IAN. 2. 1915. l

Patented Sept. 19, 1916'.

3 SHEETS-SHEET 3.

W w i d Hime LEN'rz, or initiiiiifenniv's'izi, GERMAY.

specification of Leners-iraient. Patented Sept. 19, wie.-

Applieanon med January 27,1915'.- s'ar'iai' no: 4,666

To all whom z't m ay concern. l Bc it known that I, HUGO LENTz, a, subject of the Emperor of Germany, and -r'esidentof Berlin-Halensee, Germany,- have -invented certain new and useful Improvements in Valves, o which the following` 1s a specification.

My Ainvention relates to improvements 'in valves, and more particularly in-valvesof Vthat class, irl-which a valve casingfis plo vided with inlet andoutlet passages and a.

.Chamber for the valve lplug,extends 'stone' piece which providesan npperrguide-forthe .vavlveistem, so that by loosening,r Athe said gcrews the valve can be taken-apart'andac- .,r CiESS can be had to the parts of the valve.

A further object ofthe invention is o.

construct lthe cap in such a way, that ley-.the said screws e uniform lund reliable -'fiuidtight joint is providedeven where-the valve has large dimensions, or inothervwerds', so that even large valves can be constructed in the simple Way which heretofore ywas possible only in small valves.

ldfith these objects in view :my-invention consists in providing'a concave cap which is fitted on the valve casing between oppositeribs provided on-'the casing, nndholding the saidcap in position by means of two screws which pass ythrough bores made in. the valve casingr `and having ltheir tops formed to lwovidesupports for the ends of the cross-piece.

For the `purpose of explainng'the invention two examples 'emh'odying thcsame' have been shown in the accompanying drawings, in which the same letters of'refercncerhave 'been used in all the views toindicate c0rresponding' parts.

ln said drawings-Figure `1,'is n longitudinal section of the valve. Fig. 2, isla plan view of the seat of the cap of the valve, Fig. 3. is a er ss-section of the valve, and Fig. 4. is aci'osssection similar to that shown in Fig. 3, and Showing a modification ot the invention.

Referring` to the' example illustrated in Figs. l to 3, the whlve casing a is formed with a chamber which extends upward'md throughthe top wellll of the casing so as to provide therein an elongated transverse slet. f

Within the chamber I) a valve plug is iecated-which as shown consists of two. plates" 'c and i placed near together and havingr their adjacent faces formed with cavities c and d', each of which has one sloping wall. Inkthe said cavities a roller c is confined. One ofthe platesl is made `ii'itegral lwith e rstem dwhich extends upward within `the chamber b and is -fo1med with a longitudh.

nal bore. Within the said bore a rod f 'and aspring f ere located which act on the plete c and ftend Vto press the same downward relatively to the plate (Z. The slot provided within the wall of th casing by the chamber is `cove-red hy a cap l/ which is placed on a machined 'face` of the valve casingprovided around the slot and which is `bordered at opposite sides by twoparallel ribsa.-between which the cap is fitted. To provide atiuid tight joint n suitable packing medium (not shown) .is placed between the cap and the `machined face of the casing. The cap is secured to the casing:

by two screws h which bear on the wall of the casing-'with shoulders k and extend `throughbores made m the casmler and carry at'iheir-lower ends nuts h. At their upper `ends the said screws support a cross-piece :i

which carries. in a central bore a' rotary mit 1. The stem ff passes through a stuhing box g provided in thc cap 47. Te the stem (Z a screw-threaulcd spindle la is rigidly Secured .which cxteiulsthi'ough the nut/lv. To the nut a hand wheel le is secured .by

'means of kwhich the uut l.' is' rotated for forcing the valve plug upward or downward.

lVith the construction of the valvedescribed herein two screws L are sufficient for Vholding,y the c'ap f/ in position. By unscrew ing thenuts It thi` valve can be taken apart -so as to permit access to the inner parts v vthereo'hand in a similar way thil parts of the valve can bc'united.

VVVIn Fig. 4 l have shown an example in -which the valve, is equipped with means `For `opening.: or closing the same from a point located at adistance from the valve. The construction of the valve is the same as has been described with rcieijhnce to Figs. i to 3 and thesa'inc letters of reference have been useih to indicate corrcspondin,"Ir parts. Thenut carries a gear wheel m which 1s in mosh with a -gzear wheel '11. licved to' the upper end of a Vshaft o. The lnttcl' is mounted in a bore of the-'screw la By unscrewing'the nuts k and removmg the cap and the cross-piece `the valve is taken apart, the shaft o remain- A lng Within the sore7 11,. The driving mechanism for the `valve plug is simple-in construction andrcliable in operation.

What I claim and desire to secure by Letters.. Patent of the United States, is the folh lowing: 1,

1. In'a valve, the'combination with the casing having inlet and outlet passages, anda chamber intermediate said passages and yextending at fone side through the wall of the casing and said casing having on its outer wall Where' the chamber extends' through lthe -walha machined surface, of a valve -plug Within said chamber, a stem connectefkW-ithv the valvevplug, a lcap fitted on the s aidsurfacand having a concave part,

. said casing .having bores in thejwall thereof,

Screws/Passing therethrough and'securing thefcapto the casing and cross piece, said l screws having parts coperatixg-therewith and supporting said cross piece, a nut mounted to rotatein said cross piece and co- 'operating with said stem, and means for rotating said nut.

`formed with a longitudinal bore ing witnesses.

2. In, a valve, the combination with a 'Ac-asing having inlet and outlet passages, anda chamber intermediate said passages and ex- L .pa-rt, said casing having bores therein. screws passlng through said bores and securing the cap to the casing, one of said screws being a shaft passing through said llongitudinal bore, a cross-piece secured to the tops of said screws and providing a-guide for the stem, and` gear wheels secured respectively to the shaft and stem.

.In testimony whereof, I have signed this specification in the presence' of two-subscrib- HGo LENTZ.

Witnesses WOLDEMAR HAUir, HENRY HAsPlm. 

